High Pitched Metal Whining Sound

[Scott in Houston]

I have a '02 Turbo, but I am posting here because there's more traffic and people who may know.

I noticed that when I take my car into a parking garage and start driving around in 1st gear for a while, it will start this screeching kind of whining metallic sound from the drive train or something. The sound will disappear when I push the clutch in however. I can then engage 1st gear and drive a bit again, and it will eventually start up again. It's never immediate, it's more after having driven in 1st for a few seconds or minutes and almost always after having gone up a ramp or incline then reaching the top and driving/idling forward while still in gear.

Any idea what this is? It doesn't seem to be harmful, but it concerns me obviously.

I will have the dealer take a look and fix under warranty if there's something to be fixed, but I want to go into the dealer with an educated guess as to what it is.

[orlando_deke]

Perhaps the clutch release bearing. They can "squeal" like that when they are worn.